1. (adj)celestial sphere, sphere, empyrean, firmament, heavens, vault of heaven, welkin the apparent surface of the imaginary sphere on which celestial bodies appear to be projected Synonyms: sector, firmament, domain, sphere of influence, arena, empyrean, sphere, orbit, vault of heaven, celestial sphere, field, welkin, area, heavens Antonyms: inglorious
2. (adj)empyrean, empyreal of or relating to the sky or heavens Synonyms: sublime, empyrean, empyreal Antonyms: inglorious